from tkinter import *

print('Введите начальную координату N:')
N = int(input())

coords = [0,0,10,0,10,10,20,10,20,20,10,20,10,30,0,30]

if N == 0 and X >= 0 and X >= 500 and Y >= 0 and Y <= 500:
    pass
else:
    if N > 0 and 0*N+X>=0 and 0*N+X>=0 and 20*N+X<=500 and 20*N+Y<=500:
        pass
    else:
        if N < 0 and 20*N+X>=0 and 20*N+X>=0 and 0*N+Y<=500 and 0*N+Y<=500:
            pass
        else:
            print('Размер фигуры превышает максимальный размер поля')
            exit()

root = Tk()
root.title("ИТ марафон")
root.geometry("500x500")

canvas = Canvas(bg="white", width=500, height=500)
canvas.pack(anchor=CENTER, expand=1)

canvas.create_polygon(coords[0] *N+X, coords[1] *N+X,
                      coords[2] *N+X, coords[3] *N+X,
                      coords[4] *N+X, coords[5] *N+X,
                      coords[6] *N+X, coords[7] *N+X,
                      coords[8] *N+X, coords[9] *N+X,
                      coords[10] *N+X, coords[11] *N+X,
                      coords[12] *N+X, coords[13] *N+X,
                      coords[14] *N+X, coords[15] *N+X)

root.mainloop()